.left {
    width: 20%;
    float: left;
}

.right {
    width: 80%;
    float: right;
}

.daohanglan {
    width: 100%;
}

.neirongqu {
    width: 100%;
}

.lleft {
    float: left;
}

.rright {

    float: right;
    margin-right:2%;
}

